A big storm is forecast, bringing significant snow, rain, strong winds and rising freezing levels.
Avoiding avalanche terrain is strongly recommended.
Widespread, touchy storm slabs are building, with natural avalanche activity expected to increase significantly as snowfall transitions to rain at upper elevations.
As the surface snow becomes wetter, wet loose avalanches will be easy to trigger and may, in turn trigger larger storm slabs with serious consequences.
Widespread avalanche activity is expected on Monday. No recent avalanches have been reported, but observations are very limited in this region.
If you're heading out into the backcountry, please consider sharing your observations on the MIN.
30 to 60 mm of precipitation falling as either rain or snow is forecast overnight and throughout Monday. This new snow will add to previous storm slabs that have built over the last few days, which currently overlie older layers such as surface hoar, facets, and sun crusts.
The freezing level is forecast to rise to around 2100 m by Monday afternoon, which will likely leave the snow surface moist or wet at lower elevations.
Total snowpack depths range from around 80 to 150 cm deep at treeline, and diminish rapidly at lower elevations.
Check out this great MIN for recent observations off the Coquihalla.
Sunday Night
Cloudy. 5 to 15 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1400 m.
Monday
Cloudy. 20 to 45 mm of precipitation as snow or rain at treeline. 60 km/h southwest ridgetop wind. Treeline temperature +2 °C. Freezing level rising to 2100 m
Tuesday
Mostly cloudy. 20 to 30 mm of precipitation as snow or rain at treeline. 50 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1400 m.
Wednesday
Mostly cloudy. 5 to 15 mm of precipitation as snow or rain at treeline. 50 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1700 m.
More details can be found in the Mountain Weather Forecast.
